Improved rotart wire-peed



-WILLIAM FOSKET'IQVOF MERIDEIN, CONNECTICUT,

Lem/rs Patent No. 87,555, Mazara/rot 9, 1869.

IMPROVED ROTARY WIRE-FEED.

The Schedule referred te in thse Letters Patent and making part of the same.

To all whom it may concern:

Be it known that I, WILLIAM A. Fosnn'rr, of Meriden, county of New Haven, and State of Connecticut, have invented a new and usefuli Improvement in a RotaryrWire-Feed; andfI do hereby declare the following to be a full, clean-and exact description of the same, reference being had'to the accompanying drawings, and to the letters of reference marked thereon. vSaid drawings constitute part of this specification, and represent,l in

Figure .1, a plan or top view of my improvement; in

Figure 2, a side view of the same; in

Figure 3, an endv View; in l Figure 4, a horizontal section, taken through line d; z,- and in Figures 5.and 6, detached views, showing the operation of the cam upon the` roll.

Similar letters offreference, when -they occur in the separate views, .indicate like parts.

My invention relates to-an improvement in a device for the purpose of making a rotarywire-feed, intermittentin its action; and` consists in placing upon the shaft of one of the feed-rolls, a variable cam, thisA said cam to operate against a smooth roll upon the yother shaft, and separate the two feed-rolls, thus causing them tocease theiractionupon the wire, without mpeding their rotary motion. The object of this is to adapt its use to all cases where an intermittent feedv is required, and to take the place of the common backend-forward feed. now used.

It is well known that a rotary feed( can be got into a smaller compass, and canvbe driven'to better advantage than thel common kind, by doing away with the levers and fulcruni, slides and connecting-rods, which are in many cases found sol inconvenient in applying a feed but the great trouble has been that in a rotary feed, the wire is fed continuously unless the motion of the rolls is stopped. All this, however, is obyiated by' using myl improvement.

To enable others'skille'd in the art to make anduse my improvement, I will proceed to describe the oo nstruction and operation of the same.

A and A are two feed-rolls, similar to those used on any rotary feed, placed upon shafts B and B',

which shafts are. held in proper bearings C C, formed `upon a bed, G. l

. The,y shaft B is the driving-shaft. and is held in rigid bearings. l

Upon this shaft, between the bearings G O, a smooth roll or barrel, D, 'is placed. l

TheV shaft B is driven from the shaft B, by means of gears E and E. The said shaft B is held at one end in a stationary bearing, while at theother end, upon which the feedfroll is placed, a lateral-sliding bearing is provided. The object of this sliding bearing is toallow for themoveinent'pf the'shaft B'.

v'As the feed-rolls are opened and closed, the said slide. is acted upon by the sp1-ing a, for lthe `purpose of keeping the said slide in its place when the cam F is n'ot in operation upon the shaft B.

Between the bearings C C, and corresponding in position with the roll, or barrel D, against which it operates, a double cam, F, is placed. The form of this cam is that shown in black, fig. 4, which is .two con centric' segments of circles, with a small offset, the outer circle, or rise of the cam, to extend a little over one-half its circumference.`

This said cam F is made in two parts, or itis actually two cams ofthe same form, placed together upon the shaft. These two parts ofthe said can] are made adjustable, and may be moved around the shaft B,and set at Yany required point, thus varying the position of the said cam upon the shaft, or the two parts with relation to each other. y

The relative position of the two parts of this cam may be varied from the position shown in black, ng. 4, (in which they exactly correspond,).to any position between this and the position shown in f1g..6, where 4of the said cam, with reference to each other,jasbefore described, by this means enlarging or diminish ing the outer circle of the said cam. This circle may be enlarged from the size shown inblack, iig. 4, which is the size of the circle when the two'parts of the cam are in the same relative position to any size, as shown in iig. 5, between that and the whole circumference of the saidcam, or when the two partsstaud directly opposite each other, as shown in tig. 6. When this is donc, the feedfrolls A and A are kept apart their entire revolution. The length of the feed is by this means: diminished in the same proportion as the louter circle of the cam is enlarged.

This completes the construction of my improvement.

The operation is as follows:

When the inner circle of the cam F is against the of the said cam operates upon the roll, or barrel D,

when, by means of the spring a, the .rolls are again thrown together, andthe wire is carried forward.

In order to vary the length of the feed, the two parts of the cani F are placed in the requisite position to allow the feed-rolls A and A to be kept together' for such a part .of the revolution as is necessary to carry the wire the given distance, and the said parts of the What I claim as new and useful, :md desire to seeure by Letters Patent, is-

-The variable cani F, operating upon the smooth roll, or barrel D, or its equivalent, when used upon :n rotgny feed, in the manner and for the purpose substanfiall y as herein set forth.

WM.. A. FOSKETT. Witnesses:V

' RUFUs H. SANFORD, FRANK PREseoT'r. 

